An uptown 3 train operator was forced to slam on the brakes when the man, dressed in white shorts and a blue, white and orange shirt, was spotted walking the tracks between the Christopher St. and 14th St. stations about 8 a.m.

The unidentified wanderer then decided to take a rest and was seen lying across the tracks.

"He was laying down, then got up and sat on (the) tracks feet from first train car," commuter Casie Jordan tweeted.

"Power was turned off to all tracks between 34 St.-Penn Station to Christopher St. after he was observed attempting to touch the third rail and running along the tracks between stations," MTA spokeswoman Amanda Kwan said in a statement.

Commuters were not impressed.

An uptown No. 3 train was forced to slam on the brakes when the man was spotted walking along the roadbed. (@kcavery via Twitter)

"All trains delayed because of a person sitting on the tracks at 14th Street, as one does on a Thursday morning," straphanger Eileen McNamara tweeted.